public void ReadOnlyFieldReturnsValue()
{
var metric = new MetricWithTaggedReadOnlyField("test");
var defaultTags = ImmutableDictionary <string, string> .Empty;
var tagConverter = new TagValueConverterDelegate((name, value) => value);
var tags = metric.GetTags(defaultTags, tagConverter, x => x, new Dictionary <Type, List <MetricTag> >());
Assert.True(tags.ContainsKey("Tag"));
Assert.Equal("test", tags["Tag"]);
}
public void ReadWriteFieldThrows()
{
var metric = new MetricWithTaggedReadWriteField();
var defaultTags = ImmutableDictionary <string, string> .Empty;
var tagConverter = new TagValueConverterDelegate((name, value) => value);
Assert.Throws <InvalidOperationException>(
() => metric.GetTags(defaultTags, tagConverter, x => x, new Dictionary <Type, List <MetricTag> >())
);
}
public void TagValuesAreConverted()
{
var metric = new MetricWithTaggedReadOnlyProperty("value");
var defaultTags = ImmutableDictionary <string, string> .Empty;
var tagConverter = new TagValueConverterDelegate((name, value) => value.ToUpper());
var tags = metric.GetTags(defaultTags, tagConverter, x => x, new Dictionary <Type, List <MetricTag> >());
Assert.True(tags.ContainsKey("Tag"));
Assert.Equal("VALUE", tags["Tag"]);
}
internal string GetTagsJson(
ReadOnlyDictionary <string, string> defaultTags,
TagValueConverterDelegate tagValueConverter,
Dictionary <Type, List <BosunTag> > tagsByTypeCache)
{
var sb = new StringBuilder();
foreach (var tag in GetTagsList(defaultTags, tagsByTypeCache))
{
var value = tag.IsFromDefault ? defaultTags[tag.Name] : tag.FieldInfo.GetValue(this)?.ToString();
if (tagValueConverter != null)
{
value = tagValueConverter(tag.Name, value);
}
if (value == null)
{
if (tag.IsOptional)
{
continue;
}
throw new InvalidOperationException(
$"null is not a valid tag value for {GetType().FullName}.{tag.FieldInfo.Name}. This tag was declared as non-optional.");
}
if (!BosunValidation.IsValidTagValue(value))
{
throw new InvalidOperationException(
$"Invalid value for tag {GetType().FullName}.{tag.FieldInfo.Name}. \"{value}\" is not a valid tag value. " +
$"Only characters in the regex class [a-zA-Z0-9\\-_./] are allowed.");
}
// everything is already validated, so we can skip a more formal JSON parser which would handle escaping
sb.Append(",\"" + tag.Name + "\":\"" + value + "\"");
}
if (sb.Length == 0)
{
if (!IsExternalCounter())
{
throw new InvalidOperationException(
$"At least one tag value must be specified for every metric. {GetType().FullName} was instantiated without any tag values.");
}
sb.Append('{');
}
else
{
sb[0] = '{'; // replaces the first comma
}
sb.Append('}');
return(sb.ToString());
}
public void CustomTagName()
{
var metric = new MetricWithCustomNaming("custom-name");
var defaultTags = ImmutableDictionary <string, string> .Empty;
var tagConverter = new TagValueConverterDelegate((name, value) => value);
var tags = metric.GetTags(defaultTags, tagConverter, x => x, new Dictionary <Type, List <MetricTag> >());
Assert.True(tags.ContainsKey("my-awesome-tag"));
Assert.False(tags.ContainsKey("Tag"));
Assert.Equal("custom-name", tags["my-awesome-tag"]);
}
public void InvalidFieldTypesThrow(Type type)
{
var metricType = typeof(MetricWithInvalidField <>).MakeGenericType(type);
var metric = (MetricBase)Activator.CreateInstance(metricType);
var defaultTags = ImmutableDictionary <string, string> .Empty;
var tagConverter = new TagValueConverterDelegate((name, value) => value);
Assert.Throws <InvalidOperationException>(
() => metric.GetTags(defaultTags, tagConverter, x => x, new Dictionary <Type, List <MetricTag> >())
);
}
public void EnumMembersReturnValues()
{
var metric = new MetricWithTaggedEnumMembers(TagValue.One, TagValue.Two);
var defaultTags = ImmutableDictionary <string, string> .Empty;
var tagConverter = new TagValueConverterDelegate((name, value) => value);
var tags = metric.GetTags(defaultTags, tagConverter, x => x, new Dictionary <Type, List <MetricTag> >());
Assert.True(tags.ContainsKey("Field"));
Assert.Equal("One", tags["Field"]);
Assert.True(tags.ContainsKey("Property"));
Assert.Equal("Two", tags["Property"]);
}
internal IReadOnlyDictionary <string, string> GetTags(
IReadOnlyDictionary <string, string> defaultTags,
TagValueConverterDelegate tagValueConverter,
Func <string, string> propertyToTagConverter,
Dictionary <Type, List <MetricTag> > tagsByTypeCache)
{
var tags = new Dictionary <string, string>();
foreach (var tag in GetTagsList(defaultTags, propertyToTagConverter, tagsByTypeCache))
{
var value = tag.IsFromDefault ? defaultTags[tag.Name] : tag.GetValue(this);
if (tagValueConverter != null)
{
value = tagValueConverter(tag.Name, value);
}
if (value == null)
{
if (tag.IsOptional)
{
continue;
}
throw new InvalidOperationException(
$"null is not a valid tag value for {GetType().FullName}.{tag.MemberInfo.Name}. This tag was declared as non-optional.");
}
if (!MetricValidation.IsValidTagValue(value))
{
throw new InvalidOperationException(
$"Invalid value for tag {GetType().FullName}.{tag.MemberInfo.Name}. \"{value}\" is not a valid tag value. " +
$"Only characters in the regex class [a-zA-Z0-9\\-_./] are allowed.");
}
tags.Add(tag.Name, value);
}
if (tags.Count == 0)
{
throw new InvalidOperationException(
$"At least one tag value must be specified for every metric. {GetType().FullName} was instantiated without any tag values.");
}
return(tags);
}
internal string GetTagsJson(ReadOnlyDictionary<string, string> defaultTags, TagValueConverterDelegate tagValueConverter, Dictionary<Type, List<BosunTag>> tagsByTypeCache)
{
var sb = new StringBuilder();
foreach (var tag in GetTagsList(defaultTags, tagsByTypeCache))
{
var value = tag.IsFromDefault ? defaultTags[tag.Name] : tag.FieldInfo.GetValue(this)?.ToString();
if (tagValueConverter != null)
value = tagValueConverter(tag.Name, value);
if (value == null)
{
if (tag.IsOptional)
continue;
throw new InvalidOperationException(
$"null is not a valid tag value for {GetType().FullName}.{tag.FieldInfo.Name}. This tag was declared as non-optional.");
}
if (!BosunValidation.IsValidTagValue(value))
{
throw new InvalidOperationException(
$"Invalid value for tag {GetType().FullName}.{tag.FieldInfo.Name}. \"{value}\" is not a valid tag value. " +
$"Only characters in the regex class [a-zA-Z0-9\\-_./] are allowed.");
}
// everything is already validated, so we can skip a more formal JSON parser which would handle escaping
sb.Append(",\"" + tag.Name + "\":\"" + value + "\"");
}
if (sb.Length == 0)
{
throw new InvalidOperationException(
$"At least one tag value must be specified for every metric. {GetType().FullName} was instantiated without any tag values.");
}
sb[0] = '{'; // replaces the first comma
sb.Append('}');
return sb.ToString();
}
